Subject: Inquiry on Recent STP Operations and Membrane Cleaning Procedure
Dear Karthik,
I hope this message finds you well. I am writing to discuss some observations regarding our recent Sewage Treatment Plant (STP) operations and the maintenance activities that took place.
Firstly, we noticed a period of three days where no tankers were discharging. This coincided with the time we isolated one stream for membrane inspection and cleaning. As each stream typically contributes significantly to our TSE production, I am keen to understand the specific impacts this had on our operations and how we mitigated any potential disruptions.
Regarding the cleaning process of our Membrane Bioreactor (MBR) system, it took three days. Based on my understanding, such processes typically take around 12 hours. Could you please provide more details on why this particular cleaning process took longer? Were there any specific challenges encountered during this maintenance activity?
Additionally, could you please share the specific cleaning protocol that was used? I am particularly interested in knowing whether the recommended chemicals (such as sodium hypochlorite and citric acid) were used and if the cleaning cycle followed the typical frequency of once every 3-6 months.
Your insights would be greatly appreciated as they would help us better understand our operations and potentially optimize our maintenance activities moving forward.
Looking forward to your response.
Best regards, "